The investment seeks daily investment results, before fees and expenses, that correspond to two times (2x) the daily performance of the Markit iBoxx $ Liquid High Yield Index. The fund invests in exchange-traded funds and derivatives that ProShare Advisors believes, in combination, should have similar daily return characteristics as two times (2x) the daily return of the index. The index is a modified market-value weighted index designed to provide a balanced representation of U.S. dollar-denominated high yield corporate bonds for sale within the United States. The fund is non-diversified.